Wednesday, October 2, 2013

S3TR Streeter Concept

S3TR Streeter is a concept of single person vehicle for urban city area but is also capable of traveling in short distance routes outside. The distance range depends on battery type and capacity but falls between 20 and 40 kilometers. One of the major requirements during design process was to include great fun while driving, so airplane-like controls and tilting mechanism to steer (like flying or skiing) are incorporated into this vehicle design to provide the right amount of fun for its rider. Second important requirement was the ability to fold fast for easy transport, and when folded, this concept vehicle should measure approximately as regular suitcase.

Steering is performed depending of selected mode; by leaning the vehicle at the side of a direction (tilting mode) or by simply moving the control column at the side of a turn while the vehicle and foot rests remain steady (fixed mode). Tilting mode is normal operation mode, more appropriate for normal and high speeds while the fixed mode is for speeds approximate to man pace, and offers better maneuverability.

Designer : Vladimir Bosnjak

S3TR Streeter Concept Personal Vehicle by Vladimir Bosnjak

S3TR Concept Personal Vehicle by Vladimir Bosnjak

S3TR Streeter Prototype was built by the use of only very basic hobby tools at inappropriate place and with limited budget, so it lacks some technical solutions and some are realized in a hard way. The purpose of the prototype was to demonstrate the functionality and to present the approximate design.

Frame consists of few major parts that are mostly made of cheap square/rectangular tubes by welding while the cowlings are of epoxy and fiberglass fabric modeled over the styrofoam core.

Prototype is driven by the off-the-shelf E-bike kit by Golden Motor which is certified for use in EU countries. Motor is brushless type, high efficiency electric motor that performs 30 km with a single charge. Compared to a small city car consumption of 5l/100km, this vehicle is at least 10 times more efficient because single charging of batteries costs less than 0.2€

S3TR Streeter Concept Personal Vehicle by Vladimir Bosnjak

S3TR Streeter Concept Personal Vehicle by Vladimir Bosnjak

S3TR Streeter Concept Personal Vehicle by Vladimir Bosnjak